Chair



(No Model.) 2 Sh eets Sheet 1. U. H. D'E PREHN.

CHAIR.

No. 443,504. Patented Dec. 30, 1890.

(No Model.) 2 Sheets-Sheet 2.

0. H. DE FREHNJ CHAIR.

No. 443,504. I Patented Dec. 30, 1890.

UNITED STATES PATENT OFFICE.

CHARLES HENRY DE FREHN, OF WILLIAMSPORT, MARYLAND.

CHAIR.

SPECIFICATION forming part of Letters Patent No. 443,504, dated December30, 1890.

Application filed July 16,1889. Serial No. 317,685. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES HENRY DE FREHN, of IVilliamsport, in thecounty of Washington and State of Maryland, have invented certain newand useful Improvements in Chairs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanying drawings, which formpart of this specification.

My invention relates to an improvement in chairs; and it consists in theconstruction, which will be fully described hereinafter, and pointed outin the claims.

The object of my invention is to construct the back and seat of a chairof continuous elastic strips, which are connected only at their ends tothe top and bottom cross-bars of the seat and back frame, so that theyhave an independent up-and-down, back-and-forth, and lateral movements,whereby they conform to the shape of the person sitting in the chair,and which produces a very comfortable seat.

Figure l is a perspective of a chair embodying my invention. Fig. 2 is avertical section. Fig. 3 is a front view.

A represents the side supporting baseframes, to which the continuouscurved supporting-bars D of the seat and back frame are secured in anysuitable manner. The lower ends of these bars extend slightly beyond thefront edge of the chair-frame A, as shown, and connected to theseextending ends is a crossbar G. Connected to the upper ends of the barsD is a supporting cross-bar B, to which i nected only at their ends, areallowed an independent up-and-down and lateral move ment at their curvedportions, as shown in Figs. 2 and 3, and also a back-and-forth andlateral movement from their upper ends to their curved portions. Thesemovements of the elastic strips allow them to conform to the shape ofthe person sitting in the chair, making it very comfortable, and whichgive and form a yielding support as the person rocks.

IVhile I here show my invention applied to a rocking-chair, I do notlimit myself to this application, for it will be readily understood thatit can be applied to chair-frames of various forms.

Having thus described my invention, I claim 1. A seat and back framecomposed of continuous curved side bars, bent as shown and connected atthe top and bottom by crossbars, and the con tinuous elastic stripscurved to substantially correspond to the curve of the side bars andconnected at the top and bottom to the said cross-bars and having nointermediate connections between these points, the whole composing acombined seat and back frame capable of application to chairs of variousforms, substantially as shown and described.

2. Aseat and back frame composed of supporting side bars, top and frontcross supporting-bars, and intermediate longitudinal continuous elasticstrips curved to form a back and seat, having their upper and lower endsconnected, respectively, to the said cross-bars and having nointermediate connections between these points, whereby a back and seatare formed of elastic strips having the independent movements set forth,for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES HENRY DE FREHN.

Witnesses:

WILLIAM DE FREHN, JAMES E. HAVVKEN.

